Methyl chloroformate → 1-methoxycarbonyl-S-methylisothiourea

Participants

Reaction Steps

To 69.5 parts 2-methyl-2-thiopseudourea sulfate and 47 parts of methyl chloroformate in 1,000 parts water at 0°C is added dropwise 56.9 parts of potassium hydroxide in 200 parts of water. The reaction mixture is stirred at room temperature for 3 hours and then extracted with methylene chloride. The methylene chloride extract is dried and the solvent evaporated on a rotary evaporator to give 45 parts of methyl N-(1-amino-1-methylthiomethylene)carbamate melting at 72°-77°C.

Provenance & Evidence